<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>P14 1.3.5 函数</title>
</head>

<body>
    function sum(a,b){
    var c=a+b;
    return c;
    }
    alert(sum(11,22));
    alert(sum(22,33));
    <a href="../首页/page01.html">
        <h2>返回上一页面</h2>
    </a>
</body>

</html>